source: npl/system/netkit-ftp/patches/12-netkit-ftp-0.17-multihome.patch @ 26ffad7

netkit-ftp-0.17/ftp/ftp_var.h

@@ -69 +69 @@
 Extern int      bell;           /* ring bell on cmd completion */
 Extern int      doglob;         /* glob local file names */
 Extern int      autologin;      /* establish user account on connection */
+Extern int      multihome;      /* multi homed host, use same interface for cmd and data channels */
 Extern int      proxy;          /* proxy server connection active */
 Extern int      proxflag;       /* proxy connection exists */
 Extern int      sunique;        /* store files on server with unique name */

netkit-ftp-0.17/ftp/ftp.c

@@ -132 +132 @@
 static sigjmp_buf ptabort;
 static int ptabflg = 0;
 static int abrtflag = 0;
+struct sockaddr_in source;
 
 void lostpeer(int);
 extern int connected;
@@ -153 +154 @@
 char *
 hookup(const char *host, const char *port)
 {
-        int s, tos, error;
+        int s, tos, error, alen;
         socklen_t len;
         static char hostnamebuf[256];
         struct addrinfo hints, *res, *res0;
@@ -278 +279 @@
         }
         if (verbose)
                 printf("Connected to %s (%s).\n", hostname, hbuf);
-        if (getreply(0) > 2) {  /* read startup message from server */
+        alen = sizeof(source);
+        getsockname(s,(struct sockaddr*)&source, &alen);
+        source.sin_port = 0;    /* We just want the addr, not the port */
+
+        if (getreply(0) > 2) {  /* read startup message from server    */
                 if (cin)
                         (void) fclose(cin);
                 if (cout)
@@ -1254 +1259 @@
                         perror("ftp: socket");
                         return(1);
                 }
+                if((multihome) &&
+                        bind(data, (struct sockaddr*)&source, sizeof(source)) == -1) {
+                        close(data);
+                        data = -1;
+                        perror("ftp multihome bind");
+                        return(1);
+                }
                 if (options & SO_DEBUG &&
                     setsockopt(data, SOL_SOCKET, SO_DEBUG, (char *)&on,
                                sizeof (on)) < 0)

netkit-ftp-0.17/ftp/main.c

@@ -93 +93 @@
         printf("\t   -n: inhibit auto-login\n");
         printf("\t   -e: disable readline support, if present\n");
         printf("\t   -g: disable filename globbing\n");
+        printf("\t   -m: don't force data channel interface to the same as control channel\n");
         printf("\t   -v: verbose mode\n");
         printf("\t   -t: enable packet tracing [nonfunctional]\n");
         printf("\t   -d: enable debugging\n");
@@ -120 +121 @@
         doglob = 1;
         interactive = 1;
         autologin = 1;
+        multihome = 1;
         passivemode = 1;
 
         cp = strrchr(argv[0], '/');
@@ -172 +174 @@
                                 rl_inhibit = 1;
                                 break;
                                 
+                        case 'm':
+                                multihome = 0;
+                                break;
+
                         case 'h':
                                 usage();
                                 exit(0);

netkit-ftp-0.17/ftp/ftp.1

@@ -92 +92 @@
 executable. Otherwise, does nothing.
 .It Fl g
 Disables file name globbing.
+.It Fl m
+The default requires that ftp explicitly binds to the same interface for the data
+channel as the control channel in passive mode. Useful on multi-homed
+clients. This option disables this behavior.
 .It Fl v
 Verbose option forces
 .Nm ftp